lanscape 3.2.2rc3

A python based local network scanner

LANscape

A local network scanner with a built-in web UI. Discover devices, open ports, and running services on your network.

The UI was recently converted into react, stored in a separate repo: mdennis281/lanscape-ui

pip install lanscape
python -m lanscape

Stats:

Latest release:

Health:

---

More screenshots

---

Flags

Flag	Description
--version	Show the installed version and exit
--ui-port <number>	Port for the web UI (default: auto)
--ws-port <number>	Port for the WebSocket server (default: 8766)
--ws-server	Start WebSocket server only (no UI)
--persistent	Don't auto-shutdown when the browser tab closes
--mdns-off	Disable mDNS service discovery
--logfile <path>	Write log output to a file
--loglevel <level>	Set log level: DEBUG, INFO, WARNING, ERROR, CRITICAL (default: INFO)
--debug	Shorthand for --loglevel DEBUG

python -m lanscape
python -m lanscape --version
python -m lanscape --ui-port 8080
python -m lanscape --debug --persistent
python -m lanscape --logfile /tmp/lanscape.log --loglevel WARNING
python -m lanscape --ws-server --ws-port 9000

Docker (Linux Only)

Docker is recommended for Linux hosts only. Network scanning requires --network host mode, which only works properly on Linux. For Windows/Mac, use pip install lanscape instead.

docker run -d --name lanscape \
  --network host \
  --cap-add NET_RAW \
  --cap-add NET_ADMIN \
  ghcr.io/mdennis281/lanscape:latest

Or use Docker Compose:

curl -O https://raw.githubusercontent.com/mdennis281/LANscape/main/docker-compose.yml
docker compose up -d

Access the UI at http://localhost:5001

Custom Ports

To use different ports, set the environment variables. When using --network host (as below), Docker ignores -p, so only the environment variables are needed. In bridge mode, you must also publish the matching ports with -p/ports:.

docker run -d --name lanscape \
  --network host \
  -e LANSCAPE_UI_PORT=8080 \
  -e LANSCAPE_WS_PORT=8081 \
  --cap-add NET_RAW \
  --cap-add NET_ADMIN \
  ghcr.io/mdennis281/lanscape:latest

Environment Variables

Variable	Default	Description
LANSCAPE_UI_PORT	5001	Web UI port
LANSCAPE_WS_PORT	8766	WebSocket server port
LANSCAPE_LOG_LEVEL	INFO	Log level (DEBUG, INFO, WARNING, ERROR, CRITICAL)
LANSCAPE_MDNS	true	Enable mDNS discovery (true/false)
LANSCAPE_WS_ONLY	false	WebSocket-only mode (true/false)
LANSCAPE_LOG_FILE		Path to log file (optional)

Note: Network scanning requires --network host mode for ARP/device discovery. Without it, you won't see MAC addresses/hostnames

Troubleshooting

MAC Address / Manufacturer is inaccurate or unknown

LANscape does an ARP lookup to determine MAC addresses. This can require elevated permissions to get accurate results — try running your shell as admin.

Scan accuracy seems low

The scanner uses a combination of ARP, ICMP, and port probing to find devices. If results aren't great out of the box:

• Tweak the scan configuration preset (accessible from the gear icon)
• Set up ARP lookup properly — see ARP issues
• Open an issue if something still seems off

Something else

Feel free to submit an issue with details about what you're seeing.